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= Egress IP address architectural design and implementation
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The {product-title} egress IP address functionality allows you to ensure that the traffic from one or more pods in one or more namespaces has a consistent source IP address for services outside the cluster network.
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By using the {product-title} egress IP address functionality, you can ensure that the traffic from one or more pods in one or more namespaces has a consistent source IP address for services outside the cluster network.
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For example, you might have a pod that periodically queries a database that is hosted on a server outside of your cluster. To enforce access requirements for the server, a packet filtering device is configured to allow traffic only from specific IP addresses.
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To ensure that you can reliably allow access to the server from only that specific pod, you can configure a specific egress IP address for the pod that makes the requests to the server.
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An egress IP address assigned to a namespace is different from an egress router, which is used to send traffic to specific destinations.
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ifndef::openshift-rosa[]
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[id="nw-egress-ips-platform-support_{context}"]
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== Platform support
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Support for the egress IP address functionality on various platforms is summarized in the following table:
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The Egress IP address feature that runs on a primary host network is supported on the following platforms:
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[cols="1,1",options="header"]
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|===
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| Platform | Supported
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| Bare metal | Yes
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| {ibm-z-name} and {ibm-linuxone-name} for {op-system-base-full} KVM | Yes
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| {ibm-power-name} | Yes
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| Nutanix | Yes
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|===
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The Egress IP address feature that runs on a secondary host network is supported on the following platform:
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